<template>
  <div class="login">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      label-position="left"
      label-width="0px"
      class="login-form"
    >
      <h3 class="title">
        {{ Config.title }}
      </h3>
      <el-form-item prop="username">
        <el-input v-model="loginForm.username" type="text" auto-complete="off" placeholder="账号">
          <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item prop="code">
        <el-input
          v-model="loginForm.code"
          auto-complete="off"
          placeholder="验证码"
          style="width: 63%;"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" />
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin: 0 0 25px 0;">
        记住我
      </el-checkbox>
      <el-form-item style="width: 100%;">
        <el-button
          :loading="loading"
          size="medium"
          type="primary"
          style="width: 100%;"
          @click.native.prevent="handleLogin"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div v-if="$store.state.settings.showFooter" id="el-login-footer">
      <span v-html="$store.state.settings.footerTxt" />
      <span>⋅</span>
      <a href="http://www.beian.miit.gov.cn" target="_blank">
        {{ $store.state.settings.caseNumber }}
      </a>
    </div>
  </div>
</template>

<script>
  import { encrypt } from '@/utils/rsaEncrypt';
  import Config from '@/settings';
  import { getCodeImg } from '@/api/login';
  import Cookies from 'js-cookie';
  export default {
    name: 'Login',
    data() {
      return {
        Config,
        codeUrl: '',
        cookiePass: '',
        loginForm: {
          username: 'admin',
          password: '123456',
          rememberMe: false,
          code: '',
          uuid: '',
        },
        loginRules: {
          username: [{ required: true, trigger: 'blur', message: '用户名不能为空' }],
          password: [{ required: true, trigger: 'blur', message: '密码不能为空' }],
          code: [{ required: true, trigger: 'change', message: '验证码不能为空' }],
        },
        loading: false,
        redirect: undefined,
      };
    },
    watch: {
      $route: {
        handler: function (route) {
          this.redirect = route.query && route.query.redirect;
        },
        immediate: true,
      },
    },
    created() {
      this.getCode();
      this.getCookie();
    },
    methods: {
      getCode() {
        getCodeImg().then((res) => {
          this.codeUrl = res.img;
          this.loginForm.uuid = res.uuid;
        });
      },
      getCookie() {
        const username = Cookies.get('username');
        let password = Cookies.get('password');
        const rememberMe = Cookies.get('rememberMe');
        // 保存cookie里面的加密后的密码
        this.cookiePass = password === undefined ? '' : password;
        password = password === undefined ? this.loginForm.password : password;
        this.loginForm = {
          username: username === undefined ? this.loginForm.username : username,
          password: password,
          rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
          code: '',
        };
      },
      handleLogin() {
        this.$refs.loginForm.validate((valid) => {
          const user = {
            username: this.loginForm.username,
            password: this.loginForm.password,
            rememberMe: this.loginForm.rememberMe,
            code: this.loginForm.code,
            uuid: this.loginForm.uuid,
          };
          if (user.password !== this.cookiePass) {
            user.password = encrypt(user.password);
          }
          if (valid) {
            this.loading = true;
            if (user.rememberMe) {
              Cookies.set('username', user.username, { expires: Config.passCookieExpires });
              Cookies.set('password', user.password, { expires: Config.passCookieExpires });
              Cookies.set('rememberMe', user.rememberMe, { expires: Config.passCookieExpires });
            } else {
              Cookies.remove('username');
              Cookies.remove('password');
              Cookies.remove('rememberMe');
            }
            this.$store
              .dispatch('Login', user)
              .then(() => {
                this.loading = false;
                this.$router.push({ path: this.redirect || '/' });
              })
              .catch(() => {
                this.loading = false;
                this.getCode();
              });
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      },
    },
  };
</script>

<style rel="stylesheet/scss" lang="scss">
  .login {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    background-size: cover;
    background-image: url(../assets/images/backgroud.png);
  }
  .title {
    margin: 0 auto 30px auto;
    text-align: center;
    color: #666;
    font-size: 40px;
  }

  .login-form {
    border-radius: 6px;
    background: #ffffff;
    width: 500px;
    padding: 25px 25px 5px 25px;
    .el-input {
      height: 38px;
      input {
        height: 38px;
      }
    }
    .input-icon {
      height: 39px;
      width: 14px;
      margin-left: 2px;
    }
  }
  .login-tip {
    font-size: 13px;
    text-align: center;
    color: #bfbfbf;
  }
  .login-code {
    width: 33%;
    display: inline-block;
    height: 38px;
    float: right;
    img {
      cursor: pointer;
      vertical-align: middle;
    }
  }
</style>
